package com.yiibai.tutorial.javabasic.variable;
interface A100{
	void a();
	void b();
	void c();
	void d();
}
abstract class B implements A100{
	public void c() {
		System.out.println("I am C");
	}
}
class M extends B{
	public void a() {
		System.out.println("I am a");
	}
	public void b() {
		System.out.println("I am b");
	}
	public void d() {
		System.out.println("I am d");
	}	
}
public class Test5 {
	public static void main(String args[]) {
		A100 a = new M();
		a.a();
		a.b();
		a.c();
		a.d();
	}
}